过去，植物一直保持与气候同步，在上次冰河期解冻之后，给了它们许多时间让它们迁移。
In the past, plants have kept pace with the climate and after the last ice age thawed had lots of time to migrate.
因此，实体必须保持时间同步。
Therefore, it is important for the entities to maintain synchronized time.
还需要确保所有的计算机都保持时间上的同步。
Also ensure that all the machines are in sync with the same time.
即便是有了当前的同步技术，也很难保持我的PalmPilot、桌面PC以及移动电话之间的联系和时间表的同步。
Even with current synchronization technology, it's hard to keep contacts and schedules synchronized across my Palm Pilot, desktop PC, laptop, and mobile phone.
尝试与邮件保持同步，因为如果你不这么做，以后你就永远没有时间花在旧邮件上。
Try to keep up-to-date with your private emails, because if you don't, you will never have time to spend on old emails later.
尝试保持与私人邮件同步，因为如果你不这么做，以后你就永远没有时间花在旧邮件上。
Try to keep up-to-date with your private emails, because if you don't, you will never have time to spend time on old emails later.
凸轮轴通过皮带链接与机轴保持同步，准确控制了可燃气体的进出时间。
The timing is controlled by the camshaft which is synchronized to the crankshaft by a chain or belt.
研究了实现卫星定位接收机终端时间与卫星系统时间保持实时同步的一种异步数据融合方法。
A data fusion method of realizing receiver and sender of satellite location system to keep the synchronization time are presented.
研究了实现卫星定位接收机终端时间与卫星系统时间保持实时同步的一种异步数据融合方法。
A data fusion method of realizing receiver and sender of satellite location system to keep the synchronization time are presented.
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